CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
97.1%
Issue Overview:
There’s a null pointer dereference and server-side request forgery flaw in httpd’s mod_proxy module, when it is configured to be used as a forward proxy. A crafted packet could be sent on the adjacent network to the forward proxy that could cause a crash, or potentially SSRF via misdirected Unix Domain Socket requests. In the worst case, this could cause a denial of service or compromise to confidentiality of data. (CVE-2021-44224)
A buffer overflow flaw in httpd’s lua module could allow an out-of-bounds write. An attacker who is able to submit a crafted request to an httpd instance that is using the lua module may be able to cause an impact to confidentiality, integrity, and/or availability. (CVE-2021-44790)
Affected Packages:
httpd24
Issue Correction:
Run yum update httpd24 to update your system.
New Packages:
i686:
mod24_ssl-2.4.52-1.95.amzn1.i686
httpd24-2.4.52-1.95.amzn1.i686
httpd24-devel-2.4.52-1.95.amzn1.i686
httpd24-tools-2.4.52-1.95.amzn1.i686
mod24_md-2.4.52-1.95.amzn1.i686
mod24_proxy_html-2.4.52-1.95.amzn1.i686
httpd24-debuginfo-2.4.52-1.95.amzn1.i686
mod24_session-2.4.52-1.95.amzn1.i686
mod24_ldap-2.4.52-1.95.amzn1.i686
noarch:
httpd24-manual-2.4.52-1.95.amzn1.noarch
src:
httpd24-2.4.52-1.95.amzn1.src
x86_64:
mod24_ssl-2.4.52-1.95.amzn1.x86_64
httpd24-tools-2.4.52-1.95.amzn1.x86_64
mod24_ldap-2.4.52-1.95.amzn1.x86_64
httpd24-debuginfo-2.4.52-1.95.amzn1.x86_64
mod24_proxy_html-2.4.52-1.95.amzn1.x86_64
mod24_session-2.4.52-1.95.amzn1.x86_64
mod24_md-2.4.52-1.95.amzn1.x86_64
httpd24-devel-2.4.52-1.95.amzn1.x86_64
httpd24-2.4.52-1.95.amzn1.x86_64
Red Hat: CVE-2021-44224, CVE-2021-44790
Mitre: CVE-2021-44224, CVE-2021-44790
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Amazon Linux | 1 | i686 | mod24_ssl | < 2.4.52-1.95.amzn1 | mod24_ssl-2.4.52-1.95.amzn1.i686.rpm |
Amazon Linux | 1 | i686 | httpd24 | < 2.4.52-1.95.amzn1 | httpd24-2.4.52-1.95.amzn1.i686.rpm |
Amazon Linux | 1 | i686 | httpd24-devel | < 2.4.52-1.95.amzn1 | httpd24-devel-2.4.52-1.95.amzn1.i686.rpm |
Amazon Linux | 1 | i686 | httpd24-tools | < 2.4.52-1.95.amzn1 | httpd24-tools-2.4.52-1.95.amzn1.i686.rpm |
Amazon Linux | 1 | i686 | mod24_md | < 2.4.52-1.95.amzn1 | mod24_md-2.4.52-1.95.amzn1.i686.rpm |
Amazon Linux | 1 | i686 | mod24_proxy_html | < 2.4.52-1.95.amzn1 | mod24_proxy_html-2.4.52-1.95.amzn1.i686.rpm |
Amazon Linux | 1 | i686 | httpd24-debuginfo | < 2.4.52-1.95.amzn1 | httpd24-debuginfo-2.4.52-1.95.amzn1.i686.rpm |
Amazon Linux | 1 | i686 | mod24_session | < 2.4.52-1.95.amzn1 | mod24_session-2.4.52-1.95.amzn1.i686.rpm |
Amazon Linux | 1 | i686 | mod24_ldap | < 2.4.52-1.95.amzn1 | mod24_ldap-2.4.52-1.95.amzn1.i686.rpm |
Amazon Linux | 1 | noarch | httpd24-manual | < 2.4.52-1.95.amzn1 | httpd24-manual-2.4.52-1.95.amzn1.noarch.rpm |
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
97.1%